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decode block rlp less often (#9252)

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in total:
- removed 4 redundant rlp deserializations
- avoid 1 redundant block data copy
This commit is contained in:
Marek Kotewicz
2018-08-02 11:20:46 +02:00
committed by André Silva
parent f442665c46
commit b4ae1b6528
17 changed files with 116 additions and 165 deletions
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59
ethcore/src/block.rs
View File

@@ -40,7 +40,7 @@ use engines::EthEngine;
use error::{Error, BlockError};
use ethereum_types::{H256, U256, Address, Bloom};
use factory::Factories;
use hash::{keccak, KECCAK_NULL_RLP, KECCAK_EMPTY_LIST_RLP};
use hash::keccak;
use header::{Header, ExtendedHeader};
use receipt::{Receipt, TransactionOutcome};
use rlp::{Rlp, RlpStream, Encodable, Decodable, DecoderError, encode_list};
@@ -51,7 +51,6 @@ use transaction::{UnverifiedTransaction, SignedTransaction, Error as Transaction
use triehash::ordered_trie_root;
use unexpected::{Mismatch, OutOfBounds};
use verification::PreverifiedBlock;
use views::BlockView;
use vm::{EnvInfo, LastHashes};
/// A block, encoded as it is on the block chain.
@@ -66,11 +65,6 @@ pub struct Block {
}
impl Block {
/// Returns true if the given bytes form a valid encoding of a block in RLP.
pub fn is_good(b: &[u8]) -> bool {
Rlp::new(b).as_val::<Block>().is_ok()
}
/// Get the RLP-encoding of the block with the seal.
pub fn rlp_bytes(&self) -> Bytes {
let mut block_rlp = RlpStream::new_list(3);
@@ -398,26 +392,11 @@ impl<'x> OpenBlock<'x> {
/// Turn this into a `ClosedBlock`.
pub fn close(self) -> Result<ClosedBlock, Error> {
let mut s = self;
let unclosed_state = s.block.state.clone();
s.engine.on_close_block(&mut s.block)?;
s.block.state.commit()?;
s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes())));
let uncle_bytes = encode_list(&s.block.uncles);
s.block.header.set_uncles_hash(keccak(&uncle_bytes));
s.block.header.set_state_root(s.block.state.root().clone());
s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes())));
s.block.header.set_log_bloom(s.block.receipts.iter().fold(Bloom::zero(), |mut b, r| {
b.accrue_bloom(&r.log_bloom);
b
}));
s.block.header.set_gas_used(s.block.receipts.last().map_or_else(U256::zero, |r| r.gas_used));
let unclosed_state = self.block.state.clone();
let locked = self.close_and_lock()?;
Ok(ClosedBlock {
block: s.block,
block: locked.block,
unclosed_state,
})
}
@@ -429,18 +408,11 @@ impl<'x> OpenBlock<'x> {
s.engine.on_close_block(&mut s.block)?;
s.block.state.commit()?;
if s.block.header.transactions_root().is_zero() || s.block.header.transactions_root() == &KECCAK_NULL_RLP {
s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes())));
}
if s.block.header.uncles_hash().is_zero() || s.block.header.uncles_hash() == &KECCAK_EMPTY_LIST_RLP {
let uncle_bytes = encode_list(&s.block.uncles);
s.block.header.set_uncles_hash(keccak(&uncle_bytes));
}
if s.block.header.receipts_root().is_zero() || s.block.header.receipts_root() == &KECCAK_NULL_RLP {
s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes())));
}
s.block.header.set_transactions_root(ordered_trie_root(s.block.transactions.iter().map(|e| e.rlp_bytes())));
let uncle_bytes = encode_list(&s.block.uncles);
s.block.header.set_uncles_hash(keccak(&uncle_bytes));
s.block.header.set_state_root(s.block.state.root().clone());
s.block.header.set_receipts_root(ordered_trie_root(s.block.receipts.iter().map(|r| r.rlp_bytes())));
s.block.header.set_log_bloom(s.block.receipts.iter().fold(Bloom::zero(), |mut b, r| {
b.accrue_bloom(&r.log_bloom);
b
@@ -537,18 +509,16 @@ impl LockedBlock {
self,
engine: &EthEngine,
seal: Vec<Bytes>,
) -> Result<SealedBlock, (Error, LockedBlock)> {
) -> Result<SealedBlock, Error> {
let mut s = self;
s.block.header.set_seal(seal);
s.block.header.compute_hash();
// TODO: passing state context to avoid engines owning it?
match engine.verify_local_seal(&s.block.header) {
Err(e) => Err((e, s)),
_ => Ok(SealedBlock {
block: s.block
}),
}
engine.verify_local_seal(&s.block.header)?;
Ok(SealedBlock {
block: s.block
})
}
}
@@ -637,12 +607,11 @@ pub fn enact_verified(
is_epoch_begin: bool,
ancestry: &mut Iterator<Item=ExtendedHeader>,
) -> Result<LockedBlock, Error> {
let view = view!(BlockView, &block.bytes);
enact(
block.header,
block.transactions,
view.uncles(),
block.uncles,
engine,
tracing,
db,